P0117 BMW - Engine Coolant Temperature Sensor 1 Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3    What is this?
Table of contents

P0117 BMW Possible Causes

  • Low engine coolant level
  • Faulty Engine Coolant Temperature (ECT) sensor
  • Faulty engine coolant thermostat
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Engine Coolant Temperature (ECT) sensor circuit poor electrical connection

How do I fix code P0117 BMW?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the P0117 BMW code

Labor: 1.0

The cost of diagnosing the P0117 BMW code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the code detected?

An excessively low voltage from the sensor is sent to ECM.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0117 BMW Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
OBDII Code P0117 Bmw - Engine Coolant Temperature Sensor 1 Circuit Low - AutoCodes.com

More Information

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